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We use the computer in the first place to manipulate data, so obviously you need a way to put the data - in comes the input device. Now the input data has to be processed in the desired format - in comes the Central Processing Unit. Finally you need a means to get back your processed data which is now meaningful information - so we use an output device.
All the devices are related to each other during the entire process of using a computer. Without any one of these we cannot use the computer to its optimum.
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What is the relationship between two quantities for each input there is exactly one output.?
The relationship is called a surjection or a surjective function.
What is a relationship between input and output?
It is a mapping which assigns one or more outputs to each set of one or more inputs. A relationship need not be a function.
If you double the input of a function and it results in half the output and if you triple the input and it results in a third of the output what can be guessed about the function?
~the function is most likely inversely proportional. ~more input results in less output.
What is the output value if the input value is 4?
Without knowing the specific function or equation being used, it is impossible to determine the output value if the input value is 4. In mathematics, the output value is dependent on the specific function or equation being evaluated. To find the output value when the input value is 4, you would need to know the function or equation being used and then substitute 4 in place of the input variable to calculate the output value.
Can a function have more than one output per one input?
No. A function has only one output per input.
